./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/floats-esbmc-regression/Double_div_bad.i.p+cfa-reducer.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 57096758 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67e3807-5425-486d-8186-a7badefc205b/bin/utaipan-mTDlp9Zugs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67e3807-5425-486d-8186-a7badefc205b/bin/utaipan-mTDlp9Zugs/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67e3807-5425-486d-8186-a7badefc205b/bin/utaipan-mTDlp9Zugs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67e3807-5425-486d-8186-a7badefc205b/bin/utaipan-mTDlp9Zugs/config/TaipanReach.xml -i ../../sv-benchmarks/c/floats-esbmc-regression/Double_div_bad.i.p+cfa-reducer.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67e3807-5425-486d-8186-a7badefc205b/bin/utaipan-mTDlp9Zugs/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67e3807-5425-486d-8186-a7badefc205b/bin/utaipan-mTDlp9Zugs --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 47ed977f76c934f7398d12ebfeb1101009979bf5 ........................................................................................................................................................................................................................................................ Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67e3807-5425-486d-8186-a7badefc205b/bin/utaipan-mTDlp9Zugs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67e3807-5425-486d-8186-a7badefc205b/bin/utaipan-mTDlp9Zugs/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67e3807-5425-486d-8186-a7badefc205b/bin/utaipan-mTDlp9Zugs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67e3807-5425-486d-8186-a7badefc205b/bin/utaipan-mTDlp9Zugs/config/TaipanReach.xml -i ../../sv-benchmarks/c/floats-esbmc-regression/Double_div_bad.i.p+cfa-reducer.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67e3807-5425-486d-8186-a7badefc205b/bin/utaipan-mTDlp9Zugs/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67e3807-5425-486d-8186-a7badefc205b/bin/utaipan-mTDlp9Zugs --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 47ed977f76c934f7398d12ebfeb1101009979bf5 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN --- Real Ultimate output --- This is Ultimate 0.2.1-dev-5709675 [2021-10-16 02:46:34,538 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-16 02:46:34,541 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-16 02:46:34,602 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-16 02:46:34,603 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-16 02:46:34,607 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-16 02:46:34,610 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-16 02:46:34,615 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-16 02:46:34,618 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-16 02:46:34,625 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-16 02:46:34,626 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-16 02:46:34,628 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-16 02:46:34,629 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-16 02:46:34,632 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-16 02:46:34,636 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-16 02:46:34,641 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-16 02:46:34,644 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-16 02:46:34,645 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-16 02:46:34,648 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-16 02:46:34,658 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-16 02:46:34,660 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-16 02:46:34,662 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-16 02:46:34,666 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-16 02:46:34,667 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-16 02:46:34,678 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-16 02:46:34,679 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-16 02:46:34,679 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-16 02:46:34,682 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-16 02:46:34,683 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-16 02:46:34,685 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-16 02:46:34,685 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-16 02:46:34,686 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-16 02:46:34,689 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-16 02:46:34,691 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-16 02:46:34,693 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-16 02:46:34,693 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-16 02:46:34,695 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-16 02:46:34,695 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-16 02:46:34,696 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-16 02:46:34,697 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-16 02:46:34,698 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-16 02:46:34,699 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67e3807-5425-486d-8186-a7badefc205b/bin/utaipan-mTDlp9Zugs/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-16 02:46:34,751 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-16 02:46:34,751 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-16 02:46:34,753 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-16 02:46:34,753 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-16 02:46:34,753 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-16 02:46:34,754 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-16 02:46:34,754 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-16 02:46:34,754 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-16 02:46:34,761 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-16 02:46:34,761 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-16 02:46:34,762 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-16 02:46:34,763 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-16 02:46:34,763 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-16 02:46:34,763 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-16 02:46:34,764 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-16 02:46:34,764 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-16 02:46:34,765 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-16 02:46:34,765 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-16 02:46:34,765 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-16 02:46:34,765 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-16 02:46:34,766 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-16 02:46:34,766 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-16 02:46:34,766 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-16 02:46:34,766 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-16 02:46:34,766 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-16 02:46:34,767 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-16 02:46:34,767 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-16 02:46:34,767 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-16 02:46:34,767 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-16 02:46:34,768 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-16 02:46:34,768 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-16 02:46:34,768 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-16 02:46:34,769 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-16 02:46:34,769 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-16 02:46:34,769 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-16 02:46:34,769 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-16 02:46:34,769 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-16 02:46:34,770 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-16 02:46:34,770 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-16 02:46:34,770 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67e3807-5425-486d-8186-a7badefc205b/bin/utaipan-mTDlp9Zugs/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67e3807-5425-486d-8186-a7badefc205b/bin/utaipan-mTDlp9Zugs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 47ed977f76c934f7398d12ebfeb1101009979bf5 [2021-10-16 02:46:35,144 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-16 02:46:35,176 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-16 02:46:35,178 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-16 02:46:35,180 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-16 02:46:35,181 INFO L275 PluginConnector]: CDTParser initialized [2021-10-16 02:46:35,181 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67e3807-5425-486d-8186-a7badefc205b/bin/utaipan-mTDlp9Zugs/../../sv-benchmarks/c/floats-esbmc-regression/Double_div_bad.i.p+cfa-reducer.c [2021-10-16 02:46:35,272 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67e3807-5425-486d-8186-a7badefc205b/bin/utaipan-mTDlp9Zugs/data/fa49b7da8/c8d12d38ba274d67aba8b7f3f797c274/FLAGf1d3e29d9 [2021-10-16 02:46:35,838 INFO L306 CDTParser]: Found 1 translation units. [2021-10-16 02:46:35,839 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67e3807-5425-486d-8186-a7badefc205b/sv-benchmarks/c/floats-esbmc-regression/Double_div_bad.i.p+cfa-reducer.c [2021-10-16 02:46:35,853 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67e3807-5425-486d-8186-a7badefc205b/bin/utaipan-mTDlp9Zugs/data/fa49b7da8/c8d12d38ba274d67aba8b7f3f797c274/FLAGf1d3e29d9 [2021-10-16 02:46:36,200 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67e3807-5425-486d-8186-a7badefc205b/bin/utaipan-mTDlp9Zugs/data/fa49b7da8/c8d12d38ba274d67aba8b7f3f797c274 [2021-10-16 02:46:36,205 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-16 02:46:36,207 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-16 02:46:36,209 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-16 02:46:36,211 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-16 02:46:36,216 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-16 02:46:36,218 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 02:46:36" (1/1) ... [2021-10-16 02:46:36,221 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4ad1111c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:46:36, skipping insertion in model container [2021-10-16 02:46:36,221 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 02:46:36" (1/1) ... [2021-10-16 02:46:36,228 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-16 02:46:36,245 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-16 02:46:36,456 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67e3807-5425-486d-8186-a7badefc205b/sv-benchmarks/c/floats-esbmc-regression/Double_div_bad.i.p+cfa-reducer.c[674,687] [2021-10-16 02:46:36,461 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-16 02:46:36,471 INFO L203 MainTranslator]: Completed pre-run [2021-10-16 02:46:36,485 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67e3807-5425-486d-8186-a7badefc205b/sv-benchmarks/c/floats-esbmc-regression/Double_div_bad.i.p+cfa-reducer.c[674,687] [2021-10-16 02:46:36,486 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-16 02:46:36,501 INFO L208 MainTranslator]: Completed translation [2021-10-16 02:46:36,501 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:46:36 WrapperNode [2021-10-16 02:46:36,501 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-16 02:46:36,503 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-16 02:46:36,503 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-16 02:46:36,503 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-16 02:46:36,510 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:46:36" (1/1) ... [2021-10-16 02:46:36,516 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:46:36" (1/1) ... [2021-10-16 02:46:36,530 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-16 02:46:36,531 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-16 02:46:36,532 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-16 02:46:36,532 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-16 02:46:36,538 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:46:36" (1/1) ... [2021-10-16 02:46:36,539 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:46:36" (1/1) ... [2021-10-16 02:46:36,540 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:46:36" (1/1) ... [2021-10-16 02:46:36,540 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:46:36" (1/1) ... [2021-10-16 02:46:36,544 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:46:36" (1/1) ... [2021-10-16 02:46:36,546 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:46:36" (1/1) ... [2021-10-16 02:46:36,547 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:46:36" (1/1) ... [2021-10-16 02:46:36,548 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-16 02:46:36,549 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-16 02:46:36,550 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-16 02:46:36,550 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-16 02:46:36,551 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:46:36" (1/1) ... [2021-10-16 02:46:36,559 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-16 02:46:36,570 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67e3807-5425-486d-8186-a7badefc205b/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 02:46:36,595 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67e3807-5425-486d-8186-a7badefc205b/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-16 02:46:36,600 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67e3807-5425-486d-8186-a7badefc205b/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-16 02:46:36,636 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-16 02:46:36,636 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-16 02:46:36,637 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-16 02:46:36,637 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-16 02:46:36,922 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-16 02:46:36,922 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2021-10-16 02:46:36,925 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 02:46:36 BoogieIcfgContainer [2021-10-16 02:46:36,925 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-16 02:46:36,927 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-16 02:46:36,927 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-16 02:46:36,945 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-16 02:46:36,946 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 02:46:36" (1/3) ... [2021-10-16 02:46:36,946 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2bf9e169 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 02:46:36, skipping insertion in model container [2021-10-16 02:46:36,947 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:46:36" (2/3) ... [2021-10-16 02:46:36,947 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2bf9e169 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 02:46:36, skipping insertion in model container [2021-10-16 02:46:36,947 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 02:46:36" (3/3) ... [2021-10-16 02:46:36,949 INFO L111 eAbstractionObserver]: Analyzing ICFG Double_div_bad.i.p+cfa-reducer.c [2021-10-16 02:46:36,969 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-16 02:46:36,969 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-16 02:46:37,038 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-16 02:46:37,045 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-16 02:46:37,045 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-16 02:46:37,059 INFO L276 IsEmpty]: Start isEmpty. Operand has 7 states, 5 states have (on average 1.6) internal successors, (8), 6 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:46:37,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-10-16 02:46:37,064 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:46:37,065 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-10-16 02:46:37,065 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:46:37,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:46:37,071 INFO L82 PathProgramCache]: Analyzing trace with hash 1497591, now seen corresponding path program 1 times [2021-10-16 02:46:37,082 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 02:46:37,083 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1088866140] [2021-10-16 02:46:37,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:46:37,084 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 02:46:37,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-16 02:46:37,244 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-16 02:46:37,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-16 02:46:37,324 INFO L133 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-10-16 02:46:37,329 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-10-16 02:46:37,330 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-16 02:46:37,333 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-16 02:46:37,339 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-16 02:46:37,370 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.10 02:46:37 BoogieIcfgContainer [2021-10-16 02:46:37,371 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-16 02:46:37,375 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-16 02:46:37,375 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-16 02:46:37,376 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-16 02:46:37,377 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 02:46:36" (3/4) ... [2021-10-16 02:46:37,380 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-16 02:46:37,381 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-16 02:46:37,387 INFO L168 Benchmark]: Toolchain (without parser) took 1174.98 ms. Allocated memory is still 104.9 MB. Free memory was 70.3 MB in the beginning and 56.3 MB in the end (delta: 14.0 MB). Peak memory consumption was 11.7 MB. Max. memory is 16.1 GB. [2021-10-16 02:46:37,389 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 77.6 MB. Free memory was 50.7 MB in the beginning and 50.7 MB in the end (delta: 21.2 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-16 02:46:37,391 INFO L168 Benchmark]: CACSL2BoogieTranslator took 292.56 ms. Allocated memory is still 104.9 MB. Free memory was 70.1 MB in the beginning and 81.8 MB in the end (delta: -11.7 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-16 02:46:37,391 INFO L168 Benchmark]: Boogie Procedure Inliner took 27.83 ms. Allocated memory is still 104.9 MB. Free memory was 81.8 MB in the beginning and 80.3 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-16 02:46:37,393 INFO L168 Benchmark]: Boogie Preprocessor took 17.29 ms. Allocated memory is still 104.9 MB. Free memory was 80.3 MB in the beginning and 79.8 MB in the end (delta: 561.7 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-16 02:46:37,395 INFO L168 Benchmark]: RCFGBuilder took 375.69 ms. Allocated memory is still 104.9 MB. Free memory was 79.8 MB in the beginning and 69.8 MB in the end (delta: 9.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-16 02:46:37,401 INFO L168 Benchmark]: TraceAbstraction took 443.81 ms. Allocated memory is still 104.9 MB. Free memory was 69.3 MB in the beginning and 56.7 MB in the end (delta: 12.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-16 02:46:37,403 INFO L168 Benchmark]: Witness Printer took 5.82 ms. Allocated memory is still 104.9 MB. Free memory is still 56.7 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-16 02:46:37,410 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 77.6 MB. Free memory was 50.7 MB in the beginning and 50.7 MB in the end (delta: 21.2 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 292.56 ms. Allocated memory is still 104.9 MB. Free memory was 70.1 MB in the beginning and 81.8 MB in the end (delta: -11.7 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 27.83 ms. Allocated memory is still 104.9 MB. Free memory was 81.8 MB in the beginning and 80.3 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 17.29 ms. Allocated memory is still 104.9 MB. Free memory was 80.3 MB in the beginning and 79.8 MB in the end (delta: 561.7 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 375.69 ms. Allocated memory is still 104.9 MB. Free memory was 79.8 MB in the beginning and 69.8 MB in the end (delta: 9.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 443.81 ms. Allocated memory is still 104.9 MB. Free memory was 69.3 MB in the beginning and 56.7 MB in the end (delta: 12.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Witness Printer took 5.82 ms. Allocated memory is still 104.9 MB. Free memory is still 56.7 MB. There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 27]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of someBinaryDOUBLEComparisonOperation at line 12, overapproximation of someBinaryArithmeticDOUBLEoperation at line 10. Possible FailurePath: [L1] int __return_main; [L9] double main__x = 1.0; [L10] double main__x1 = main__x / 1.6; VAL [__return_main=0] [L12] COND FALSE !(main__x1 != main__x) [L21] int __tmp_1; [L22] __tmp_1 = main__x == 0 [L23] int __VERIFIER_assert__cond; [L24] __VERIFIER_assert__cond = __tmp_1 VAL [__return_main=0] [L25] COND TRUE __VERIFIER_assert__cond == 0 VAL [__return_main=0] [L27] reach_error() VAL [__return_main=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 7 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 301.9ms, OverallIterations: 1, TraceHistogramMax: 1, EmptinessCheckTime: 8.8ms, AutomataDifference: 0.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 9.7ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=7occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 17.0ms SsaConstructionTime, 56.5ms SatisfiabilityAnalysisTime, 0.0ms InterpolantComputationTime, 4 NumberOfCodeBlocks, 4 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2021-10-16 02:46:37,466 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67e3807-5425-486d-8186-a7badefc205b/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.1-dev-5709675 [2021-10-16 02:46:40,407 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-16 02:46:40,409 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-16 02:46:40,445 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-16 02:46:40,446 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-16 02:46:40,448 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-16 02:46:40,450 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-16 02:46:40,453 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-16 02:46:40,455 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-16 02:46:40,457 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-16 02:46:40,458 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-16 02:46:40,460 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-16 02:46:40,460 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-16 02:46:40,462 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-16 02:46:40,464 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-16 02:46:40,466 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-16 02:46:40,467 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-16 02:46:40,468 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-16 02:46:40,471 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-16 02:46:40,474 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-16 02:46:40,476 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-16 02:46:40,478 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-16 02:46:40,480 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-16 02:46:40,481 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-16 02:46:40,485 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-16 02:46:40,486 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-16 02:46:40,486 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-16 02:46:40,487 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-16 02:46:40,488 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-16 02:46:40,490 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-16 02:46:40,490 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-16 02:46:40,492 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-16 02:46:40,493 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-16 02:46:40,494 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-16 02:46:40,496 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-16 02:46:40,496 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-16 02:46:40,498 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-16 02:46:40,498 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-16 02:46:40,499 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-16 02:46:40,500 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-16 02:46:40,501 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-16 02:46:40,502 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67e3807-5425-486d-8186-a7badefc205b/bin/utaipan-mTDlp9Zugs/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-10-16 02:46:40,536 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-16 02:46:40,539 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-16 02:46:40,542 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-16 02:46:40,542 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-16 02:46:40,542 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-16 02:46:40,543 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-16 02:46:40,545 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-16 02:46:40,546 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-16 02:46:40,546 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-16 02:46:40,548 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-16 02:46:40,550 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-16 02:46:40,550 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-16 02:46:40,551 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-16 02:46:40,551 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-16 02:46:40,551 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-16 02:46:40,551 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-16 02:46:40,551 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-16 02:46:40,552 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-16 02:46:40,552 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-16 02:46:40,552 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-16 02:46:40,552 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-16 02:46:40,553 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-16 02:46:40,553 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-16 02:46:40,553 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-16 02:46:40,553 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-16 02:46:40,554 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-16 02:46:40,554 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-16 02:46:40,554 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-16 02:46:40,554 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-16 02:46:40,555 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-16 02:46:40,555 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-10-16 02:46:40,555 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-16 02:46:40,555 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-16 02:46:40,556 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-16 02:46:40,556 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-16 02:46:40,556 INFO L138 SettingsManager]: * Logic for external solver=AUFBV WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67e3807-5425-486d-8186-a7badefc205b/bin/utaipan-mTDlp9Zugs/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67e3807-5425-486d-8186-a7badefc205b/bin/utaipan-mTDlp9Zugs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 47ed977f76c934f7398d12ebfeb1101009979bf5 [2021-10-16 02:46:41,040 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-16 02:46:41,091 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-16 02:46:41,096 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-16 02:46:41,098 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-16 02:46:41,099 INFO L275 PluginConnector]: CDTParser initialized [2021-10-16 02:46:41,103 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67e3807-5425-486d-8186-a7badefc205b/bin/utaipan-mTDlp9Zugs/../../sv-benchmarks/c/floats-esbmc-regression/Double_div_bad.i.p+cfa-reducer.c [2021-10-16 02:46:41,179 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67e3807-5425-486d-8186-a7badefc205b/bin/utaipan-mTDlp9Zugs/data/fb2f953a1/1d37391b1af34fe5b74ec0769fed0fb5/FLAGc024313ad [2021-10-16 02:46:41,816 INFO L306 CDTParser]: Found 1 translation units. [2021-10-16 02:46:41,816 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67e3807-5425-486d-8186-a7badefc205b/sv-benchmarks/c/floats-esbmc-regression/Double_div_bad.i.p+cfa-reducer.c [2021-10-16 02:46:41,825 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67e3807-5425-486d-8186-a7badefc205b/bin/utaipan-mTDlp9Zugs/data/fb2f953a1/1d37391b1af34fe5b74ec0769fed0fb5/FLAGc024313ad [2021-10-16 02:46:42,159 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67e3807-5425-486d-8186-a7badefc205b/bin/utaipan-mTDlp9Zugs/data/fb2f953a1/1d37391b1af34fe5b74ec0769fed0fb5 [2021-10-16 02:46:42,162 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-16 02:46:42,165 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-16 02:46:42,167 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-16 02:46:42,167 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-16 02:46:42,172 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-16 02:46:42,174 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 02:46:42" (1/1) ... [2021-10-16 02:46:42,176 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@35299696 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:46:42, skipping insertion in model container [2021-10-16 02:46:42,176 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 02:46:42" (1/1) ... [2021-10-16 02:46:42,187 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-16 02:46:42,211 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-16 02:46:42,422 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67e3807-5425-486d-8186-a7badefc205b/sv-benchmarks/c/floats-esbmc-regression/Double_div_bad.i.p+cfa-reducer.c[674,687] [2021-10-16 02:46:42,428 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-16 02:46:42,458 INFO L203 MainTranslator]: Completed pre-run [2021-10-16 02:46:42,516 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67e3807-5425-486d-8186-a7badefc205b/sv-benchmarks/c/floats-esbmc-regression/Double_div_bad.i.p+cfa-reducer.c[674,687] [2021-10-16 02:46:42,518 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-16 02:46:42,560 INFO L208 MainTranslator]: Completed translation [2021-10-16 02:46:42,561 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:46:42 WrapperNode [2021-10-16 02:46:42,561 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-16 02:46:42,563 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-16 02:46:42,563 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-16 02:46:42,564 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-16 02:46:42,574 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:46:42" (1/1) ... [2021-10-16 02:46:42,587 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:46:42" (1/1) ... [2021-10-16 02:46:42,611 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-16 02:46:42,613 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-16 02:46:42,614 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-16 02:46:42,614 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-16 02:46:42,625 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:46:42" (1/1) ... [2021-10-16 02:46:42,625 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:46:42" (1/1) ... [2021-10-16 02:46:42,642 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:46:42" (1/1) ... [2021-10-16 02:46:42,643 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:46:42" (1/1) ... [2021-10-16 02:46:42,652 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:46:42" (1/1) ... [2021-10-16 02:46:42,654 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:46:42" (1/1) ... [2021-10-16 02:46:42,656 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:46:42" (1/1) ... [2021-10-16 02:46:42,659 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-16 02:46:42,661 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-16 02:46:42,661 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-16 02:46:42,661 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-16 02:46:42,662 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:46:42" (1/1) ... [2021-10-16 02:46:42,672 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-16 02:46:42,686 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67e3807-5425-486d-8186-a7badefc205b/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 02:46:42,704 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67e3807-5425-486d-8186-a7badefc205b/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-16 02:46:42,724 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67e3807-5425-486d-8186-a7badefc205b/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-16 02:46:42,767 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-16 02:46:42,767 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-16 02:46:42,767 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-16 02:46:42,768 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-16 02:46:47,416 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-16 02:46:47,416 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2021-10-16 02:46:47,418 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 02:46:47 BoogieIcfgContainer [2021-10-16 02:46:47,419 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-16 02:46:47,421 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-16 02:46:47,421 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-16 02:46:47,425 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-16 02:46:47,426 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 02:46:42" (1/3) ... [2021-10-16 02:46:47,427 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39b80e0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 02:46:47, skipping insertion in model container [2021-10-16 02:46:47,427 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:46:42" (2/3) ... [2021-10-16 02:46:47,428 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39b80e0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 02:46:47, skipping insertion in model container [2021-10-16 02:46:47,428 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 02:46:47" (3/3) ... [2021-10-16 02:46:47,430 INFO L111 eAbstractionObserver]: Analyzing ICFG Double_div_bad.i.p+cfa-reducer.c [2021-10-16 02:46:47,438 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-16 02:46:47,438 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-16 02:46:47,528 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-16 02:46:47,540 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-16 02:46:47,541 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-16 02:46:47,557 INFO L276 IsEmpty]: Start isEmpty. Operand has 9 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 8 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:46:47,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-16 02:46:47,563 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:46:47,564 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-16 02:46:47,564 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:46:47,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:46:47,573 INFO L82 PathProgramCache]: Analyzing trace with hash 28696774, now seen corresponding path program 1 times [2021-10-16 02:46:47,589 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:46:47,590 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [450229392] [2021-10-16 02:46:47,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:46:47,592 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:46:47,592 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67e3807-5425-486d-8186-a7badefc205b/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:46:47,598 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67e3807-5425-486d-8186-a7badefc205b/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:46:47,602 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67e3807-5425-486d-8186-a7badefc205b/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-16 02:46:48,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:46:48,863 INFO L263 TraceCheckSpWp]: Trace formula consists of 30 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-16 02:46:48,868 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:46:59,618 WARN L207 SmtUtils]: Spent 5.09 s on a formula simplification that was a NOOP. DAG size: 11 [2021-10-16 02:46:59,651 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:46:59,651 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:47:06,849 WARN L860 $PredicateComparison]: unable to prove that (not (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (fp.eq (fp.div c_currentRoundingMode .cse0 ((_ to_fp 11 53) c_currentRoundingMode (/ 8.0 5.0))) .cse0))) is different from true [2021-10-16 02:47:06,850 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:47:06,851 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:47:06,851 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [450229392] [2021-10-16 02:47:06,852 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [450229392] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:47:06,852 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:47:06,852 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-10-16 02:47:06,855 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1593745468] [2021-10-16 02:47:06,861 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-16 02:47:06,862 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:47:06,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-16 02:47:06,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=12, Unknown=2, NotChecked=6, Total=30 [2021-10-16 02:47:06,883 INFO L87 Difference]: Start difference. First operand has 9 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 8 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 6 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 5 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:47:11,574 WARN L860 $PredicateComparison]: unable to prove that (and (= (fp.div roundNearestTiesToEven c_ULTIMATE.start_main_~main__x~0 ((_ to_fp 11 53) roundNearestTiesToEven (/ 8.0 5.0))) c_ULTIMATE.start_main_~main__x1~0) (= ((_ to_fp 11 53) roundNearestTiesToEven 1.0) c_ULTIMATE.start_main_~main__x~0) (= c_currentRoundingMode roundNearestTiesToEven)) is different from true [2021-10-16 02:47:18,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:47:18,263 INFO L93 Difference]: Finished difference Result 16 states and 18 transitions. [2021-10-16 02:47:18,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-16 02:47:18,265 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 5 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2021-10-16 02:47:18,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:47:18,272 INFO L225 Difference]: With dead ends: 16 [2021-10-16 02:47:18,273 INFO L226 Difference]: Without dead ends: 7 [2021-10-16 02:47:18,276 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 15342.2ms TimeCoverageRelationStatistics Valid=12, Invalid=13, Unknown=3, NotChecked=14, Total=42 [2021-10-16 02:47:18,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states. [2021-10-16 02:47:18,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 7. [2021-10-16 02:47:18,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 6 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:47:18,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 7 transitions. [2021-10-16 02:47:18,308 INFO L78 Accepts]: Start accepts. Automaton has 7 states and 7 transitions. Word has length 5 [2021-10-16 02:47:18,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:47:18,309 INFO L470 AbstractCegarLoop]: Abstraction has 7 states and 7 transitions. [2021-10-16 02:47:18,309 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 5 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:47:18,309 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states and 7 transitions. [2021-10-16 02:47:18,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-16 02:47:18,310 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:47:18,310 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-16 02:47:18,336 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67e3807-5425-486d-8186-a7badefc205b/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2021-10-16 02:47:18,526 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67e3807-5425-486d-8186-a7badefc205b/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:47:18,526 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:47:18,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:47:18,527 INFO L82 PathProgramCache]: Analyzing trace with hash 889537510, now seen corresponding path program 1 times [2021-10-16 02:47:18,528 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:47:18,528 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [467739948] [2021-10-16 02:47:18,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:47:18,529 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:47:18,529 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67e3807-5425-486d-8186-a7badefc205b/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:47:18,530 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67e3807-5425-486d-8186-a7badefc205b/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:47:18,532 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67e3807-5425-486d-8186-a7badefc205b/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-16 02:47:20,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:47:20,447 INFO L263 TraceCheckSpWp]: Trace formula consists of 33 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-16 02:47:20,448 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:47:33,651 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:47:33,651 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:47:40,148 WARN L838 $PredicateComparison]: unable to prove that (not (fp.eq (fp.div c_currentRoundingMode c_ULTIMATE.start_main_~main__x1~0 ((_ to_fp 11 53) c_currentRoundingMode (/ 8.0 5.0))) c_ULTIMATE.start_main_~main__x1~0)) is different from false [2021-10-16 02:47:42,305 WARN L860 $PredicateComparison]: unable to prove that (not (fp.eq (fp.div c_currentRoundingMode c_ULTIMATE.start_main_~main__x1~0 ((_ to_fp 11 53) c_currentRoundingMode (/ 8.0 5.0))) c_ULTIMATE.start_main_~main__x1~0)) is different from true [2021-10-16 02:47:49,180 WARN L838 $PredicateComparison]: unable to prove that (not (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode (/ 8.0 5.0)))) (let ((.cse0 (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0) .cse1))) (fp.eq (fp.div c_currentRoundingMode .cse0 .cse1) .cse0)))) is different from false [2021-10-16 02:47:51,472 WARN L860 $PredicateComparison]: unable to prove that (not (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode (/ 8.0 5.0)))) (let ((.cse0 (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0) .cse1))) (fp.eq (fp.div c_currentRoundingMode .cse0 .cse1) .cse0)))) is different from true [2021-10-16 02:47:51,472 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2021-10-16 02:47:51,473 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:47:51,473 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [467739948] [2021-10-16 02:47:51,473 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [467739948] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 02:47:51,473 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [345356808] [2021-10-16 02:47:51,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:47:51,474 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-16 02:47:51,474 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67e3807-5425-486d-8186-a7badefc205b/bin/utaipan-mTDlp9Zugs/cvc4 [2021-10-16 02:47:51,478 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67e3807-5425-486d-8186-a7badefc205b/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-16 02:47:51,480 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67e3807-5425-486d-8186-a7badefc205b/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (4)] Waiting until timeout for monitored process [2021-10-16 02:47:54,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:47:54,397 INFO L263 TraceCheckSpWp]: Trace formula consists of 33 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-16 02:47:54,398 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:47:58,718 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:47:58,718 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:48:06,387 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2021-10-16 02:48:06,387 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [345356808] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 02:48:06,387 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [181804753] [2021-10-16 02:48:06,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:48:06,388 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 02:48:06,388 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67e3807-5425-486d-8186-a7badefc205b/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 02:48:06,391 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67e3807-5425-486d-8186-a7badefc205b/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-16 02:48:06,401 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67e3807-5425-486d-8186-a7badefc205b/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-10-16 02:48:20,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:48:20,721 INFO L263 TraceCheckSpWp]: Trace formula consists of 33 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-16 02:48:20,722 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:48:30,754 WARN L207 SmtUtils]: Spent 5.23 s on a formula simplification that was a NOOP. DAG size: 3 [2021-10-16 02:48:33,135 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode (/ 8.0 5.0)))) (and (= c_ULTIMATE.start_main_~main__x1~0 (fp.div c_currentRoundingMode c_ULTIMATE.start_main_~main__x~0 .cse0)) (= c_ULTIMATE.start_main_~main__x~0 (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0) .cse0)) (= c_currentRoundingMode roundNearestTiesToEven))) is different from true [2021-10-16 02:48:33,219 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2021-10-16 02:48:33,219 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:48:44,780 WARN L838 $PredicateComparison]: unable to prove that (or (not (fp.eq (fp.div c_currentRoundingMode c_ULTIMATE.start_main_~main__x1~0 ((_ to_fp 11 53) c_currentRoundingMode (/ 8.0 5.0))) c_ULTIMATE.start_main_~main__x1~0)) (fp.eq c_ULTIMATE.start_main_~main__x1~0 ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32)))) is different from false [2021-10-16 02:48:46,911 WARN L860 $PredicateComparison]: unable to prove that (or (not (fp.eq (fp.div c_currentRoundingMode c_ULTIMATE.start_main_~main__x1~0 ((_ to_fp 11 53) c_currentRoundingMode (/ 8.0 5.0))) c_ULTIMATE.start_main_~main__x1~0)) (fp.eq c_ULTIMATE.start_main_~main__x1~0 ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32)))) is different from true [2021-10-16 02:48:53,860 WARN L207 SmtUtils]: Spent 6.94 s on a formula simplification. DAG size of input: 9 DAG size of output: 1 [2021-10-16 02:48:58,509 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2021-10-16 02:48:58,510 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [181804753] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 02:48:58,510 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-10-16 02:48:58,510 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4, 4, 4, 5] total 11 [2021-10-16 02:48:58,511 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1053840209] [2021-10-16 02:48:58,512 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-16 02:48:58,512 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:48:58,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-16 02:48:58,514 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=40, Unknown=7, NotChecked=60, Total=132 [2021-10-16 02:48:58,514 INFO L87 Difference]: Start difference. First operand 7 states and 7 transitions. Second operand has 12 states, 12 states have (on average 1.3333333333333333) internal successors, (16), 11 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:49:00,901 WARN L860 $PredicateComparison]: unable to prove that (and (not (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode (/ 8.0 5.0)))) (let ((.cse0 (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0) .cse1))) (fp.eq (fp.div c_currentRoundingMode .cse0 .cse1) .cse0)))) (= c_currentRoundingMode roundNearestTiesToEven)) is different from true [2021-10-16 02:49:03,272 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode (/ 8.0 5.0)))) (let ((.cse0 (not (fp.eq (fp.div c_currentRoundingMode c_ULTIMATE.start_main_~main__x1~0 .cse1) c_ULTIMATE.start_main_~main__x1~0)))) (and (or .cse0 (fp.eq c_ULTIMATE.start_main_~main__x1~0 ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32)))) .cse0 (= c_currentRoundingMode roundNearestTiesToEven) (= c_ULTIMATE.start_main_~main__x1~0 (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0) .cse1))))) is different from false [2021-10-16 02:49:05,436 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode (/ 8.0 5.0)))) (let ((.cse0 (not (fp.eq (fp.div c_currentRoundingMode c_ULTIMATE.start_main_~main__x1~0 .cse1) c_ULTIMATE.start_main_~main__x1~0)))) (and (or .cse0 (fp.eq c_ULTIMATE.start_main_~main__x1~0 ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32)))) .cse0 (= c_currentRoundingMode roundNearestTiesToEven) (= c_ULTIMATE.start_main_~main__x1~0 (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0) .cse1))))) is different from true [2021-10-16 02:49:07,607 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse0 ((_ to_fp 11 53) roundNearestTiesToEven (/ 8.0 5.0))) (.cse1 ((_ to_fp 11 53) c_currentRoundingMode (/ 8.0 5.0)))) (and (= (fp.div roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven 1.0) .cse0) c_ULTIMATE.start_main_~main__x~0) (= c_ULTIMATE.start_main_~main__x1~0 (fp.div c_currentRoundingMode c_ULTIMATE.start_main_~main__x~0 .cse1)) (= (fp.div roundNearestTiesToEven c_ULTIMATE.start_main_~main__x~0 .cse0) c_ULTIMATE.start_main_~main__x1~0) (= c_ULTIMATE.start_main_~main__x~0 (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0) .cse1)) (= c_currentRoundingMode roundNearestTiesToEven))) is different from true [2021-10-16 02:49:16,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:49:16,364 INFO L93 Difference]: Finished difference Result 11 states and 11 transitions. [2021-10-16 02:49:16,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-16 02:49:16,365 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 1.3333333333333333) internal successors, (16), 11 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2021-10-16 02:49:16,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:49:16,365 INFO L225 Difference]: With dead ends: 11 [2021-10-16 02:49:16,365 INFO L226 Difference]: Without dead ends: 8 [2021-10-16 02:49:16,367 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 7 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 37948.9ms TimeCoverageRelationStatistics Valid=31, Invalid=42, Unknown=11, NotChecked=126, Total=210 [2021-10-16 02:49:16,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2021-10-16 02:49:16,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2021-10-16 02:49:16,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8 states, 7 states have (on average 1.1428571428571428) internal successors, (8), 7 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:49:16,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 8 transitions. [2021-10-16 02:49:16,372 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 8 transitions. Word has length 6 [2021-10-16 02:49:16,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:49:16,372 INFO L470 AbstractCegarLoop]: Abstraction has 8 states and 8 transitions. [2021-10-16 02:49:16,373 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 1.3333333333333333) internal successors, (16), 11 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:49:16,373 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 8 transitions. [2021-10-16 02:49:16,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-16 02:49:16,374 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:49:16,374 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1] [2021-10-16 02:49:16,425 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67e3807-5425-486d-8186-a7badefc205b/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-10-16 02:49:16,611 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67e3807-5425-486d-8186-a7badefc205b/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (4)] Ended with exit code 0 [2021-10-16 02:49:16,906 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67e3807-5425-486d-8186-a7badefc205b/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-10-16 02:49:16,998 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67e3807-5425-486d-8186-a7badefc205b/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67e3807-5425-486d-8186-a7badefc205b/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67e3807-5425-486d-8186-a7badefc205b/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 02:49:16,999 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:49:17,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:49:17,000 INFO L82 PathProgramCache]: Analyzing trace with hash 1805796550, now seen corresponding path program 2 times [2021-10-16 02:49:17,001 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:49:17,001 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [160094878] [2021-10-16 02:49:17,001 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-16 02:49:17,001 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:49:17,013 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67e3807-5425-486d-8186-a7badefc205b/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:49:17,017 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67e3807-5425-486d-8186-a7badefc205b/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:49:17,021 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67e3807-5425-486d-8186-a7badefc205b/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-10-16 02:49:19,817 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-16 02:49:19,817 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-16 02:49:19,962 INFO L263 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-16 02:49:19,963 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:49:33,522 WARN L207 SmtUtils]: Spent 5.46 s on a formula simplification that was a NOOP. DAG size: 3 [2021-10-16 02:49:36,250 WARN L860 $PredicateComparison]: unable to prove that (and (= c_ULTIMATE.start_main_~main__x1~0 (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode (/ 8.0 5.0)))) (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0) .cse0) .cse0))) (= c_currentRoundingMode roundNearestTiesToEven)) is different from true [2021-10-16 02:49:46,032 WARN L207 SmtUtils]: Spent 6.19 s on a formula simplification that was a NOOP. DAG size: 3 [2021-10-16 02:49:49,230 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode (/ 8.0 5.0)))) (and (= c_ULTIMATE.start_main_~main__x1~0 (fp.div c_currentRoundingMode c_ULTIMATE.start_main_~main__x~0 .cse0)) (= c_ULTIMATE.start_main_~main__x~0 (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0) .cse0) .cse0)) (= c_currentRoundingMode roundNearestTiesToEven))) is different from true [2021-10-16 02:49:49,307 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 3 not checked. [2021-10-16 02:49:49,307 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:49:59,222 WARN L838 $PredicateComparison]: unable to prove that (or (not (fp.eq (fp.div c_currentRoundingMode c_ULTIMATE.start_main_~main__x1~0 ((_ to_fp 11 53) c_currentRoundingMode (/ 8.0 5.0))) c_ULTIMATE.start_main_~main__x1~0)) (fp.eq c_ULTIMATE.start_main_~main__x1~0 ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32)))) is different from false [2021-10-16 02:50:01,379 WARN L860 $PredicateComparison]: unable to prove that (or (not (fp.eq (fp.div c_currentRoundingMode c_ULTIMATE.start_main_~main__x1~0 ((_ to_fp 11 53) c_currentRoundingMode (/ 8.0 5.0))) c_ULTIMATE.start_main_~main__x1~0)) (fp.eq c_ULTIMATE.start_main_~main__x1~0 ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32)))) is different from true [2021-10-16 02:50:06,433 WARN L207 SmtUtils]: Spent 5.05 s on a formula simplification that was a NOOP. DAG size: 8 [2021-10-16 02:50:11,836 WARN L207 SmtUtils]: Spent 5.40 s on a formula simplification that was a NOOP. DAG size: 8 [2021-10-16 02:50:14,150 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode (/ 8.0 5.0)))) (let ((.cse0 (fp.div c_currentRoundingMode c_ULTIMATE.start_main_~main__x1~0 .cse1))) (or (not (fp.eq (fp.div c_currentRoundingMode .cse0 .cse1) .cse0)) (fp.eq .cse0 ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32)))))) is different from false [2021-10-16 02:50:16,485 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode (/ 8.0 5.0)))) (let ((.cse0 (fp.div c_currentRoundingMode c_ULTIMATE.start_main_~main__x1~0 .cse1))) (or (not (fp.eq (fp.div c_currentRoundingMode .cse0 .cse1) .cse0)) (fp.eq .cse0 ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32)))))) is different from true [2021-10-16 02:50:22,271 WARN L207 SmtUtils]: Spent 5.78 s on a formula simplification that was a NOOP. DAG size: 10 [2021-10-16 02:50:28,364 WARN L207 SmtUtils]: Spent 6.09 s on a formula simplification that was a NOOP. DAG size: 10 [2021-10-16 02:50:30,764 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode (/ 8.0 5.0)))) (let ((.cse0 (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0) .cse1) .cse1))) (or (not (fp.eq (fp.div c_currentRoundingMode .cse0 .cse1) .cse0)) (fp.eq .cse0 ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32)))))) is different from false [2021-10-16 02:50:33,257 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode (/ 8.0 5.0)))) (let ((.cse0 (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0) .cse1) .cse1))) (or (not (fp.eq (fp.div c_currentRoundingMode .cse0 .cse1) .cse0)) (fp.eq .cse0 ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32)))))) is different from true [2021-10-16 02:50:33,257 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 3 not checked. [2021-10-16 02:50:33,257 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:50:33,258 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [160094878] [2021-10-16 02:50:33,258 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [160094878] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 02:50:33,258 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [57297992] [2021-10-16 02:50:33,258 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-16 02:50:33,258 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-16 02:50:33,259 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67e3807-5425-486d-8186-a7badefc205b/bin/utaipan-mTDlp9Zugs/cvc4 [2021-10-16 02:50:33,260 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67e3807-5425-486d-8186-a7badefc205b/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-16 02:50:33,261 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67e3807-5425-486d-8186-a7badefc205b/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (7)] Waiting until timeout for monitored process [2021-10-16 02:50:38,101 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-16 02:50:38,102 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-16 02:50:38,112 INFO L263 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-16 02:50:38,113 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:50:45,443 WARN L207 SmtUtils]: Spent 5.43 s on a formula simplification that was a NOOP. DAG size: 3 [2021-10-16 02:50:53,687 WARN L207 SmtUtils]: Spent 5.92 s on a formula simplification that was a NOOP. DAG size: 3 [2021-10-16 02:50:53,773 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 3 not checked. [2021-10-16 02:50:53,774 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:51:11,429 WARN L207 SmtUtils]: Spent 5.20 s on a formula simplification that was a NOOP. DAG size: 8 [2021-10-16 02:51:17,041 WARN L207 SmtUtils]: Spent 5.60 s on a formula simplification that was a NOOP. DAG size: 10 [2021-10-16 02:51:22,943 WARN L207 SmtUtils]: Spent 5.90 s on a formula simplification that was a NOOP. DAG size: 10 [2021-10-16 02:51:22,945 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 3 not checked. [2021-10-16 02:51:22,946 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [57297992] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 02:51:22,946 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1406867461] [2021-10-16 02:51:22,946 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-16 02:51:22,946 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 02:51:22,946 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67e3807-5425-486d-8186-a7badefc205b/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 02:51:22,948 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67e3807-5425-486d-8186-a7badefc205b/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-16 02:51:22,949 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67e3807-5425-486d-8186-a7badefc205b/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-10-16 02:51:51,078 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-16 02:51:51,078 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-16 02:51:51,419 INFO L263 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-16 02:51:51,420 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:51:58,438 WARN L207 SmtUtils]: Spent 5.23 s on a formula simplification that was a NOOP. DAG size: 3 [2021-10-16 02:52:07,381 WARN L207 SmtUtils]: Spent 6.01 s on a formula simplification that was a NOOP. DAG size: 3 [2021-10-16 02:52:07,461 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 3 not checked. [2021-10-16 02:52:07,461 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:52:24,979 WARN L207 SmtUtils]: Spent 5.25 s on a formula simplification that was a NOOP. DAG size: 8 [2021-10-16 02:52:30,585 WARN L207 SmtUtils]: Spent 5.60 s on a formula simplification that was a NOOP. DAG size: 10 [2021-10-16 02:52:36,571 WARN L207 SmtUtils]: Spent 5.99 s on a formula simplification that was a NOOP. DAG size: 10 [2021-10-16 02:52:36,587 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 3 not checked. [2021-10-16 02:52:36,588 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1406867461] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 02:52:36,588 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-10-16 02:52:36,588 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6, 5, 6, 5, 6] total 10 [2021-10-16 02:52:36,588 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1582101827] [2021-10-16 02:52:36,589 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-16 02:52:36,589 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:52:36,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-16 02:52:36,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=22, Unknown=8, NotChecked=60, Total=110 [2021-10-16 02:52:36,590 INFO L87 Difference]: Start difference. First operand 8 states and 8 transitions. Second operand has 11 states, 11 states have (on average 1.1818181818181819) internal successors, (13), 10 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:52:39,079 WARN L860 $PredicateComparison]: unable to prove that (and (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode (/ 8.0 5.0)))) (let ((.cse0 (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0) .cse1) .cse1))) (or (not (fp.eq (fp.div c_currentRoundingMode .cse0 .cse1) .cse0)) (fp.eq .cse0 ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32)))))) (= c_currentRoundingMode roundNearestTiesToEven)) is different from true [2021-10-16 02:52:41,529 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode (/ 8.0 5.0)))) (and (let ((.cse0 (fp.div c_currentRoundingMode c_ULTIMATE.start_main_~main__x1~0 .cse1))) (or (not (fp.eq (fp.div c_currentRoundingMode .cse0 .cse1) .cse0)) (fp.eq .cse0 ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32))))) (= c_currentRoundingMode roundNearestTiesToEven) (= c_ULTIMATE.start_main_~main__x1~0 (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0) .cse1)))) is different from false [2021-10-16 02:52:43,973 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode (/ 8.0 5.0)))) (and (let ((.cse0 (fp.div c_currentRoundingMode c_ULTIMATE.start_main_~main__x1~0 .cse1))) (or (not (fp.eq (fp.div c_currentRoundingMode .cse0 .cse1) .cse0)) (fp.eq .cse0 ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32))))) (= c_currentRoundingMode roundNearestTiesToEven) (= c_ULTIMATE.start_main_~main__x1~0 (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0) .cse1)))) is different from true [2021-10-16 02:52:46,135 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode (/ 8.0 5.0)))) (and (= c_ULTIMATE.start_main_~main__x1~0 (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0) .cse0) .cse0)) (or (not (fp.eq (fp.div c_currentRoundingMode c_ULTIMATE.start_main_~main__x1~0 .cse0) c_ULTIMATE.start_main_~main__x1~0)) (fp.eq c_ULTIMATE.start_main_~main__x1~0 ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32)))) (= c_currentRoundingMode roundNearestTiesToEven))) is different from true [2021-10-16 02:53:11,014 WARN L207 SmtUtils]: Spent 21.81 s on a formula simplification. DAG size of input: 21 DAG size of output: 15 [2021-10-16 02:53:19,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:53:19,270 INFO L93 Difference]: Finished difference Result 14 states and 15 transitions. [2021-10-16 02:53:19,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-16 02:53:19,271 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 1.1818181818181819) internal successors, (13), 10 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2021-10-16 02:53:19,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:53:19,271 INFO L225 Difference]: With dead ends: 14 [2021-10-16 02:53:19,271 INFO L226 Difference]: Without dead ends: 10 [2021-10-16 02:53:19,272 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 8 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 60630.3ms TimeCoverageRelationStatistics Valid=41, Invalid=50, Unknown=13, NotChecked=168, Total=272 [2021-10-16 02:53:19,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2021-10-16 02:53:19,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2021-10-16 02:53:19,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10 states, 9 states have (on average 1.1111111111111112) internal successors, (10), 9 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:53:19,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 10 transitions. [2021-10-16 02:53:19,275 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 10 transitions. Word has length 7 [2021-10-16 02:53:19,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:53:19,275 INFO L470 AbstractCegarLoop]: Abstraction has 10 states and 10 transitions. [2021-10-16 02:53:19,276 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 1.1818181818181819) internal successors, (13), 10 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:53:19,276 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 10 transitions. [2021-10-16 02:53:19,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-16 02:53:19,276 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:53:19,276 INFO L512 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1] [2021-10-16 02:53:19,298 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67e3807-5425-486d-8186-a7badefc205b/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (7)] Forceful destruction successful, exit code 0 [2021-10-16 02:53:19,614 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67e3807-5425-486d-8186-a7badefc205b/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-10-16 02:53:19,722 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67e3807-5425-486d-8186-a7badefc205b/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-10-16 02:53:19,878 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67e3807-5425-486d-8186-a7badefc205b/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67e3807-5425-486d-8186-a7badefc205b/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67e3807-5425-486d-8186-a7badefc205b/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:53:19,879 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:53:19,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:53:19,880 INFO L82 PathProgramCache]: Analyzing trace with hash 201697478, now seen corresponding path program 3 times [2021-10-16 02:53:19,880 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:53:19,881 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [179803147] [2021-10-16 02:53:19,881 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-16 02:53:19,881 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:53:19,881 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67e3807-5425-486d-8186-a7badefc205b/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:53:19,882 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67e3807-5425-486d-8186-a7badefc205b/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:53:19,884 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67e3807-5425-486d-8186-a7badefc205b/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-10-16 02:53:24,336 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-10-16 02:53:24,336 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-16 02:53:24,556 INFO L263 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-16 02:53:24,557 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:53:36,533 WARN L207 SmtUtils]: Spent 5.24 s on a formula simplification that was a NOOP. DAG size: 3 [2021-10-16 02:53:39,498 WARN L860 $PredicateComparison]: unable to prove that (and (= c_ULTIMATE.start_main_~main__x1~0 (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode (/ 8.0 5.0)))) (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0) .cse0) .cse0))) (= c_currentRoundingMode roundNearestTiesToEven)) is different from true [2021-10-16 02:53:45,425 WARN L207 SmtUtils]: Spent 5.88 s on a formula simplification that was a NOOP. DAG size: 3 [2021-10-16 02:53:47,624 WARN L860 $PredicateComparison]: unable to prove that (and (= (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode (/ 8.0 5.0)))) (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0) .cse0) .cse0) .cse0)) c_ULTIMATE.start_main_~main__x1~0) (= c_currentRoundingMode roundNearestTiesToEven)) is different from true [2021-10-16 02:53:54,243 WARN L207 SmtUtils]: Spent 6.59 s on a formula simplification that was a NOOP. DAG size: 3 [2021-10-16 02:53:56,921 WARN L860 $PredicateComparison]: unable to prove that (and (= (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode (/ 8.0 5.0)))) (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0) .cse0) .cse0) .cse0) .cse0)) c_ULTIMATE.start_main_~main__x1~0) (= c_currentRoundingMode roundNearestTiesToEven)) is different from true [2021-10-16 02:54:02,228 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse0 ((_ to_fp 11 53) roundNearestTiesToEven (/ 8.0 5.0)))) (and (= (fp.div roundNearestTiesToEven c_ULTIMATE.start_main_~main__x~0 .cse0) c_ULTIMATE.start_main_~main__x1~0) (= c_ULTIMATE.start_main_~main__x~0 (fp.div roundNearestTiesToEven (fp.div roundNearestTiesToEven (fp.div roundNearestTiesToEven (fp.div roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven 1.0) .cse0) .cse0) .cse0) .cse0)))) is different from true [2021-10-16 02:54:02,283 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 10 not checked. [2021-10-16 02:54:02,284 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:54:08,971 WARN L838 $PredicateComparison]: unable to prove that (not (fp.eq (fp.div c_currentRoundingMode c_ULTIMATE.start_main_~main__x1~0 ((_ to_fp 11 53) c_currentRoundingMode (/ 8.0 5.0))) c_ULTIMATE.start_main_~main__x1~0)) is different from false [2021-10-16 02:54:16,700 WARN L838 $PredicateComparison]: unable to prove that (not (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode (/ 8.0 5.0)))) (let ((.cse0 (fp.div c_currentRoundingMode c_ULTIMATE.start_main_~main__x1~0 .cse1))) (fp.eq (fp.div c_currentRoundingMode .cse0 .cse1) .cse0)))) is different from false [2021-10-16 02:54:19,008 WARN L860 $PredicateComparison]: unable to prove that (not (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode (/ 8.0 5.0)))) (let ((.cse0 (fp.div c_currentRoundingMode c_ULTIMATE.start_main_~main__x1~0 .cse1))) (fp.eq (fp.div c_currentRoundingMode .cse0 .cse1) .cse0)))) is different from true [2021-10-16 02:54:26,414 WARN L838 $PredicateComparison]: unable to prove that (not (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode (/ 8.0 5.0)))) (let ((.cse0 (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode c_ULTIMATE.start_main_~main__x1~0 .cse1) .cse1))) (fp.eq (fp.div c_currentRoundingMode .cse0 .cse1) .cse0)))) is different from false [2021-10-16 02:54:28,885 WARN L860 $PredicateComparison]: unable to prove that (not (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode (/ 8.0 5.0)))) (let ((.cse0 (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode c_ULTIMATE.start_main_~main__x1~0 .cse1) .cse1))) (fp.eq (fp.div c_currentRoundingMode .cse0 .cse1) .cse0)))) is different from true [2021-10-16 02:54:34,182 WARN L207 SmtUtils]: Spent 5.29 s on a formula simplification that was a NOOP. DAG size: 10 [2021-10-16 02:54:36,874 WARN L838 $PredicateComparison]: unable to prove that (not (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode (/ 8.0 5.0)))) (let ((.cse0 (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode c_ULTIMATE.start_main_~main__x1~0 .cse1) .cse1) .cse1))) (fp.eq (fp.div c_currentRoundingMode .cse0 .cse1) .cse0)))) is different from false [2021-10-16 02:54:39,565 WARN L860 $PredicateComparison]: unable to prove that (not (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode (/ 8.0 5.0)))) (let ((.cse0 (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode c_ULTIMATE.start_main_~main__x1~0 .cse1) .cse1) .cse1))) (fp.eq (fp.div c_currentRoundingMode .cse0 .cse1) .cse0)))) is different from true [2021-10-16 02:54:46,187 WARN L207 SmtUtils]: Spent 6.62 s on a formula simplification that was a NOOP. DAG size: 12 [2021-10-16 02:54:48,824 WARN L228 Executor]: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67e3807-5425-486d-8186-a7badefc205b/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) stderr output: (error "out of memory") [2021-10-16 02:54:48,826 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:54:48,826 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [179803147] [2021-10-16 02:54:48,827 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67e3807-5425-486d-8186-a7badefc205b/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") [2021-10-16 02:54:48,827 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1103780724] [2021-10-16 02:54:48,827 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-16 02:54:48,828 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67e3807-5425-486d-8186-a7badefc205b/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 101 [2021-10-16 02:54:48,828 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-16 02:54:48,829 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67e3807-5425-486d-8186-a7badefc205b/bin/utaipan-mTDlp9Zugs/cvc4 [2021-10-16 02:54:48,829 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67e3807-5425-486d-8186-a7badefc205b/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-16 02:54:48,846 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67e3807-5425-486d-8186-a7badefc205b/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (10)] Waiting until timeout for monitored process [2021-10-16 02:54:56,973 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-10-16 02:54:56,973 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-16 02:54:56,988 INFO L263 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-16 02:54:56,989 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:54:56,990 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67e3807-5425-486d-8186-a7badefc205b/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Connection to SMT solver broken [2021-10-16 02:54:56,990 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [294734275] [2021-10-16 02:54:56,990 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-16 02:54:56,990 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 02:54:56,991 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67e3807-5425-486d-8186-a7badefc205b/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 02:54:56,992 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67e3807-5425-486d-8186-a7badefc205b/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-16 02:54:56,993 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67e3807-5425-486d-8186-a7badefc205b/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-10-16 02:56:57,016 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-10-16 02:56:57,017 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-16 02:56:57,662 INFO L263 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-16 02:56:57,663 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:56:57,664 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67e3807-5425-486d-8186-a7badefc205b/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Connection to SMT solver broken [2021-10-16 02:56:57,665 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:56:57,665 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [] total 0 [2021-10-16 02:56:57,665 ERROR L172 FreeRefinementEngine]: Strategy WALRUS failed to provide any proof altough trace is infeasible [2021-10-16 02:56:57,665 INFO L626 BasicCegarLoop]: Counterexample might be feasible [2021-10-16 02:56:57,673 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-16 02:56:57,875 WARN L435 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67e3807-5425-486d-8186-a7badefc205b/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forcibly destroying the process [2021-10-16 02:56:57,923 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67e3807-5425-486d-8186-a7badefc205b/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-10-16 02:56:57,988 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67e3807-5425-486d-8186-a7badefc205b/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-10-16 02:56:58,156 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67e3807-5425-486d-8186-a7badefc205b/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (10)] Forceful destruction successful, exit code 0 [2021-10-16 02:56:58,324 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67e3807-5425-486d-8186-a7badefc205b/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67e3807-5425-486d-8186-a7badefc205b/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c67e3807-5425-486d-8186-a7badefc205b/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt [2021-10-16 02:56:58,333 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-16 02:56:58,349 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.10 02:56:58 BoogieIcfgContainer [2021-10-16 02:56:58,349 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-16 02:56:58,351 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-16 02:56:58,351 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-16 02:56:58,351 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-16 02:56:58,352 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 02:46:47" (3/4) ... [2021-10-16 02:56:58,356 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-16 02:56:58,356 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-16 02:56:58,358 INFO L168 Benchmark]: Toolchain (without parser) took 616192.43 ms. Allocated memory was 58.7 MB in the beginning and 71.3 MB in the end (delta: 12.6 MB). Free memory was 36.8 MB in the beginning and 45.3 MB in the end (delta: -8.5 MB). Peak memory consumption was 4.1 MB. Max. memory is 16.1 GB. [2021-10-16 02:56:58,358 INFO L168 Benchmark]: CDTParser took 0.45 ms. Allocated memory is still 58.7 MB. Free memory is still 39.7 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-16 02:56:58,359 INFO L168 Benchmark]: CACSL2BoogieTranslator took 395.39 ms. Allocated memory is still 58.7 MB. Free memory was 36.5 MB in the beginning and 41.7 MB in the end (delta: -5.2 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-16 02:56:58,360 INFO L168 Benchmark]: Boogie Procedure Inliner took 48.99 ms. Allocated memory is still 58.7 MB. Free memory was 41.5 MB in the beginning and 40.1 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-16 02:56:58,360 INFO L168 Benchmark]: Boogie Preprocessor took 46.40 ms. Allocated memory is still 58.7 MB. Free memory was 40.1 MB in the beginning and 39.1 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-16 02:56:58,361 INFO L168 Benchmark]: RCFGBuilder took 4758.06 ms. Allocated memory is still 58.7 MB. Free memory was 39.1 MB in the beginning and 30.0 MB in the end (delta: 9.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-16 02:56:58,362 INFO L168 Benchmark]: TraceAbstraction took 610928.74 ms. Allocated memory was 58.7 MB in the beginning and 71.3 MB in the end (delta: 12.6 MB). Free memory was 29.4 MB in the beginning and 45.8 MB in the end (delta: -16.4 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-16 02:56:58,362 INFO L168 Benchmark]: Witness Printer took 5.52 ms. Allocated memory is still 71.3 MB. Free memory was 45.8 MB in the beginning and 45.3 MB in the end (delta: 517.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-16 02:56:58,366 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.45 ms. Allocated memory is still 58.7 MB. Free memory is still 39.7 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 395.39 ms. Allocated memory is still 58.7 MB. Free memory was 36.5 MB in the beginning and 41.7 MB in the end (delta: -5.2 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 48.99 ms. Allocated memory is still 58.7 MB. Free memory was 41.5 MB in the beginning and 40.1 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 46.40 ms. Allocated memory is still 58.7 MB. Free memory was 40.1 MB in the beginning and 39.1 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 4758.06 ms. Allocated memory is still 58.7 MB. Free memory was 39.1 MB in the beginning and 30.0 MB in the end (delta: 9.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 610928.74 ms. Allocated memory was 58.7 MB in the beginning and 71.3 MB in the end (delta: 12.6 MB). Free memory was 29.4 MB in the beginning and 45.8 MB in the end (delta: -16.4 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 5.52 ms. Allocated memory is still 71.3 MB. Free memory was 45.8 MB in the beginning and 45.3 MB in the end (delta: 517.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 27]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: unable to decide satisfiability of path constraint. Possible FailurePath: [L1] int __return_main; [L9] double main__x = 1.0; [L10] double main__x1 = main__x / 1.6; [L12] COND TRUE main__x1 != main__x [L14] main__x = main__x1 [L15] main__x1 = main__x / 1.6 [L12] COND TRUE main__x1 != main__x [L14] main__x = main__x1 [L15] main__x1 = main__x / 1.6 [L12] COND TRUE main__x1 != main__x [L14] main__x = main__x1 [L15] main__x1 = main__x / 1.6 [L12] COND TRUE main__x1 != main__x [L14] main__x = main__x1 [L15] main__x1 = main__x / 1.6 [L12] COND FALSE !(main__x1 != main__x) [L21] int __tmp_1; [L22] __tmp_1 = main__x == 0 [L23] int __VERIFIER_assert__cond; [L24] __VERIFIER_assert__cond = __tmp_1 [L25] COND TRUE __VERIFIER_assert__cond == 0 [L27] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 9 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 610817.3ms, OverallIterations: 4, TraceHistogramMax: 4, EmptinessCheckTime: 12.3ms, AutomataDifference: 71949.4ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 11.2ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 16 SDtfs, 7 SDslu, 29 SDs, 0 SdLazy, 21 SolverSat, 3 SolverUnsat, 8 SolverUnknown, 0 SolverNotchecked, 22135.7ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 85 GetRequests, 51 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 17 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 113921.5ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=10occurred in iteration=3, InterpolantAutomatonStates: 18, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 24.2ms AutomataMinimizationTime, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 55.4ms SsaConstructionTime, 55433.0ms SatisfiabilityAnalysisTime, 262981.1ms InterpolantComputationTime, 44 NumberOfCodeBlocks, 44 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 74 ConstructedInterpolants, 0 QuantifiedInterpolants, 812 SizeOfPredicates, 36 NumberOfNonLiveVariables, 237 ConjunctsInSsa, 60 ConjunctsInUnsatCore, 14 InterpolantComputations, 2 PerfectInterpolantSequences, 0/24 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request...